Many of us have bought speakers, then sold those speakers, then bought new speakers, an sold those speakers, etc.
So unless you want to do the same thing many of us have done, definitely figure out what's important to you and don't buy until you are very certain.
You already said you want TOWERS, not bookshelf. So that's one thing out of the way. I think most people also want towers, not bookshelf for their main speakers.
A few other factors to consider.
1. Speakers with more linear frequency response (+/- 3dB, +/-2dB, +/-1dB) vs less linear response (+/-4dB, +/-5dB, etc.).
2. Pride of ownership and aesthetics. You want speakers from big name brands? Companies who make flagship speakers that cost $60K - $300K like KEF, RBH, B&W, Legacy Audio, Revel, Focal, Dynaudio, MartinLogan, Monitor Audio, etc.
3. Customer Service. You want to be able to call someone on the phone and talk to a person? Or you want to write an email and maybe get a response a week later?
There are other factors.